7-Eleven‎

I purchased a Big Gulp drink with added ice and *** as the soda. Once I returned to my office, I opened up my straw and prepared to drink my purchased soda. Once I swallowed, I had a weird after taste in my mouth. I proceeded to take another drink for reassurance and I tasted the bitter after taste again. I took the top of the soda and smelled the contents and it smelled of mildew and something old like gym socks. I called the store numerous (at least 15) of times and each time the worker would pick up the phone and put it down. After about the 10th time of my call, the worker would then just leave the phone off the hook. I wanted to inform them for the next customer but am unable to. I will keep the soda just in case I get sick from whatever it is that is making the purchased drink smell.